I have this simple Python 3 script
def myfunction(current):
current += 1
myvalue = 'Test Value'
print(current)
return current
current = 1
while ( current < 10 ):
current = myfunction(current)
It works great but I am trying to use the myvalue variable in the while loop. How can I get access to the variable?
You'll have to return myvalue if you want to use it.
def myfunction(current):
current += 1
myvalue = 'Test Value'
print(current)
return current, myvalue
current = 1
while ( current < 10 ):
current, myvalue = myfunction(current)
print(myvalue)
You can return multiple variables from a function
Try with the below code:
def myfunction(current):
current += 1
myvalue = 'Test Value'
print(current)
return current, myvalue
current = 1
while ( current < 10 ):
current, myvalue = myfunction(current)
tuple with two elements which is unpacked to two variables in the while loop.myvalue variable is local to the method myfunction. You can't access it outside that method.
You may either
myfunctionyou have 2 ways:
1: make the variable global:
myvalue = 'initvalue'
def myfunction(current):
global myvalue
current += 1
myvalue = 'Test Value'
print(current)
return current
current = 1
while ( current < 10 ):
current = myfunction(current)
2: return multiple variables from your function function
def myfunction(current):
current += 1
myvalue = 'Test Value'
print(current)
return current, myvalue
current = 1
while ( current < 10 ):
current, myvalue = myfunction(current)
In case you wanted all the values inside the function with the same identities, you could also try this (but do ensure you are not using the same variable names outside, which kinda destroys the purpose)
def myfunction(current):
current += 1
myvalue = 'Test Value'
return locals()
which should give you a dictionary of the variables. The output for print myfunction(1) will be
{'current': 2, 'myvalue': 'Test Value'}
myfunction, the others are inaccessible.